On Fri, Jul 27, 2012 at 10:14:59PM +0200, Jean Delvare wrote: > Right now we have support for explicit platform device IDs, as well as > ID-less platform devices when a given device type can only have one > instance. However there are cases where multiple instances of a device > type can exist, and their IDs aren't (and can't be) known in advance > and do not matter. In that case we need automatic device IDs to avoid > device name collisions. > > I am using magic ID value -2 (PLATFORM_DEVID_AUTO) for this, similar > to -1 for ID-less devices. The automatically allocated device IDs are > global (to avoid an additional per-driver cost.) We keep note that the > ID was automatically allocated so that it can be freed later. > > Note that we also restore the ID to PLATFORM_DEVID_AUTO on error and > device deletion, to avoid avoid unexpected behavior on retry. I don't > really expect retries on platform device addition, but better safe > than sorry. > > Signed-off-by: Jean Delvare <kh...@linux-fr.org> > Cc: Greg Kroah-Hartman <gre...@linuxfoundation.org>
Looks sane to me, want me to queue it up for 3.7? thanks, greg k-h -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
